Asked how she and her partner had managed to go to the loo, Miss Dale added: 'We hardly have.'

Miss Dale understood cameras were going to be sent down the drains because it was feared the main drain might have collapsed.

She added: 'They were just going to unblock the drains and go.

'We cleared up last time and they swilled it into the field but it wasn't disinfected properly. There is still the pong and the flies. It's not good.'

David Egerton, regional manager for Muir, said: 'I believe the problem was caused because of bricks and clothing in the sewer that shouldn't have been there, so I think Welsh Water need to find out how these items got into the sewer and bolt the manholes down or provide a bigger capacity drain.

'It is most unfortunate. I have written to Welsh Water to ask them to address the problem.'